<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
		<style type="text/css">
			.box{
				width: 100px;
				height: 100px;
				border: 1px solid darkcyan;
				display: none;
			}
		</style>
	</head>
	<body>
		<input type="button"  id="show" value="显示" />
		<input type="button" id="hide" value="隐藏" />
		<div class="box">
			
		</div>
	</body>
</html>
<script src="js/jquery-1.3.1.js" charset="utf-8"></script>
<script type="text/javascript">
	$(function(){
		$("#show").click(function(){
			$(".box").show();
		})
		$("#hide").click(function(){
			$(".box").hide();
		})
	})
</script>